Heald frame control devices

ABSTRACT

Improvements in heald frame control devices wherein a toothed driving shaft is meshed with planetary pinions of similar diameter mounted on a disc. The pinions are meshed with an interiorly toothed eccentric which actuates by its smooth exterior a flange that carries a projecting appendice articulated to the corresponding oscillatory driving lever of the heald frame. The disc and eccentric are selectively retained by the respective extremities of a cranked control lever which is oscillatable about its vertex. The eccentric and flange cause a relative reciprocating movement that is transmitted to the driving lever of the heald frame whereby the control lever undergoes a movement of displacement from its articulation point that graduates the opening of the shed.

United States Patent HEALD FRAME CONTROL DEVICES 10 Claims, 55 DrawingFigs.

US. Cl Int. Cl Field of Search References Cited UNITED STATES PATENTS3,180,366 4/1965 Hoenig Primary Examiner-Henry S. .laudonAttorney-Woodhams, Blanchard and Flynn ABSTRACT: Improvements in healdframe control devices wherein a toothed driving shaft is meshed withplanetary pinions of similar diameter mounted on a disc. The pinions aremeshed with an interiorly toothed eccentric which actuates by its smoothexterior a flange that carries a projecting appendice articulated to thecorresponding oscillatory driving lever of the heald frame. The disc andeccentric are selectively retained by the respective extremities of acranked control lever which is oscillatable about its vertex. Theeccentric and flange cause a relative reciprocating movement that istransmitted to the driving lever of the heald frame whereby the controllever undergoes a movement-of displacement from its articulation pointthat graduates the opening of the shed.

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HEALD FRAME CONTROL DEVICES This invention refers to improvements inheald frame control devices.

Said improvements essentially affect the form of action of the lever, oroscillator staves, from whose upper extremity effeet the control of theheald frames sending them upwards or downwards as also holding them atrest between both movements as the operation requires.

The driving element comprises a horizontal and longitudinally straighttoothed shaft that passes through the central hole of two discs that areseparated the one from the other by the thickness of the neck or rim ofa connecting rod, whose projecting arm is prolonged in a flange thatsurrounds and articulates the aforementioned stave or lever, providingit with a reciprocating movement, which is changed in its upperresistant arm to an upward and downward movement of the heald frames, asalso their period of rest.

Within the thickness of the connecting rod rim, an eccentrically toothedinterior crown is situated in a plate provided with an exterior rimconcentric with the crown and whose rim adjusts the central hole of thefirst disc, in whose interior face it is consolidated by points ofwelding or rivets to the eccentric plate with its interior toothedcrown.

The satellite pinions gear with the toothed crown and are driven bytheir gearing with the horizontal shaft, each pinion being supported bysmooth bolts inserted from the exterior base of the rear disc, allowingfree gyration of the aforementioned satellite piflibhs.

Both discs are provided with two diametrically opposed slots for theoperational engagement of the trigger of one or two cranked leverssolidly fixed to one or two horizontal shafts which are oscillatory asthe case requires, thus immovabilizing one of the discs by one oranother of the peripheral slots, while the other disc remains free toturn.

For the functioning of the device in semiopen shed movement, adisplacement of the cranked lever is required from its articulationpoint, which allows the opening and the closing of the shed to begraduated; and in order to obtain the upward and downward movements ofthe healds with closed shed, two opposing planetaries are provided onthe same diameter, whose proper diameters differ compensating the numberof their teeth.

In the attached drawings FIG. 1 represents a vertical side view of theheald control device in an open shed, double lift machine withoutresting point.

FIG. 2 shows the device of FIG. 1 in the top shed position.

FIG. 3 shows a cross section of the device in position of FIG. 2.

FIG. 4 represents the device of FIGS. 1 and 2 in the continued up anddown movement position of the healds.

FIG. 5 shows a side elevation of a modified device for controlling thehealds of an open shed, double lift machine with resting point, in theclosed and open shed position.

FIG. 6 shows the device in FIG. 5 in the top shed position.

FIG. 7 shows a cross section of the device in the FIG. 6 position.

FIG. 8 shows the device in FIGS. 5 and 6 in the continued up and downmovement position of the healds.

FIG. 9 shows another modified device in side elevation for the healdscontrol in an open shed, double lift machine with resting point in theup and down shed position with the possibility of semiopen shed.

FIG. 10 shows the device in FIG. 9 in the up shed position.

FIG. 11 shows a cross section of the device in the FIG. 10

position. v

FIG. 12 shows the device in F IGS. 9 arid 10 in the continued up anddown iiiovement position of the healds.

FIG. 13 shows a side elevation of still another heald control device ofa closed shed, up and down machine, with or without resting point in thedown shed and up shed position.

FIG. 14 represents the FIG. 13 device in the medium shed position, owingto the satellite pinion difference.

FIG. 15 shows a cfoss section of the device in FIG. 14 position.

FIG. 16 represents the device in FIGS. 13 and 14 in the continuedmovement of half shed at top shed position.

FIG. 17 shows a side view in elevation of a further modified device forthe control of healds in a semiopen shed, double lift machine with orwithout resting point, in the down and up shed position.

FIG. 18 shows the device in FIG. 17 in the medium shed position due tothe difference in the satellite pinions.

FIG. 19 shows the device in FIGS. 17 and 18 in the top shed position.

FIG. 20 represents the device in FIGS. 17, I8 and 19 in the medium topshed position due to the difference in the satellite pinions.

FIG. 21 shows a cross section of the device in the position FIG. 20.

FIG. 22 shows a side elevation of a further heald control device in anopen shed, double lift machine with resting point, in the down and upshed stop position.

FIG. 23 shows the device in FIG. 22 in the top shed stop position.

FIG. 24 shows a cross section of the device in the position FIG. 23.

FIG. 25 shows a side view in elevation of the device in FIGS. 22 and 23in which the machine realizes the continued up and down movement of thestaves.

FIG. 26 represents a side view in elevation of still a further modifieddevice in an open shed double lift machine with adjustable shed restingpoint, in the upper and lower shed stop position.

FIG. 27 shows a side view in elevation of the device in FIG. 26 in thetop shed stopped position.

FIG. 28 shows a cross section of the device in FIG. 27 position.

FIG. 29 shows a side view in elevation of FIGS. 26 and 27 when themachine realizes the continued up and down shed movements.

FIG. 30 shows a plan view of the elements comprising the heald controlmechanisms used in FIGS. 1 to 12, and 26 to 29 as seen in the successiveorder of colocation of each of the said devices.

FIG. 31 shows the elements of FIG. 30 dismantled in perspective in thesame order of mounting one after the other.

FIG. 32 represents a plan view of the elements comprising the mechanismsemployed in FIGS. 13 to 21.

FIG. 33 shows the elements of FIG. 32 dismantled in perspective in thesame order of mounting one after the other.

FIG. 34 represents a plan view of the elements integrating the healdcontrol mechanisms utilized in FIGS. 22 to 25, seen in successivemounting order in each of the devices described in FIGS. 22 to 25.

FIG. 35 a perspective view of the elements in FIG. 34 in the samemounting order, one after another applied in FIGS. 22 to 25.

FIG. 36 represents a side view in elevation of the exterior planetaryshaft driving element, showing the rear disc in the upper part and thefront disc in the lower part.

FIG. 37 shows a cross section of the planetary element of FIG. 36.

FIG. 38 is a graphical representation of the shed without resting point,of the embodiment of FIGS. 1 to 4.

FIG. 39 a graph of the shed with rest point, of the embodiment ofFIGS. 5to 8.

FIG. 40 a graph of the hook retaining eccentric of embodiment of FIGS. 5to 8.

FIG. 41 a graph of the shed with 30 rest point of embodiment of FIGS. 9to 12.

FIG. 42 a graph of the hook retaining eccentric with 30 rest point ofthe embodiment of FIGS. 9 to 12.

FIG. 43 a graph of the shed with 60 rest point of embodiment ofFIGS. 9to 12.

FIG. 44 a graph of the hook retaining eccentric with 60 rest point ofthe embodiment of FIGS. 9 to 12.

FIG. 45 a graph of the shed without rest point in the embodiment ofFIGS. 13 to 116.

FIG. 46 a graph of the semiopen, double lift shed without rest pointofthe embodiment of FIGS. 17 to 21.

FIG. 47 a graph of the open shed, double lift shed with 6 rest point ofthe embodiment of FIGS. 22 to 25.

FIG. 48 a graph of the cranked lever eccentric of the embodiment ofFIGS. 22 to 25.

FIG. 49 a graph of the open shed, double lift shed with 60 resting ofthe embodiment in FIGS. 26 to 29, with addition of the exteriordifferential of the FIGS. 36 and 37, and which provokes in the centralshaft an alternating reciprocating movement of one turn to the right andanother toward the left.

FIG. 50 shows the previous graph with a 90 resting point.

FIG. 51 shows the previous graph with a 120 resting point.

FIG. 52 shows the graph of the closed up and down shed with 60 restpoint of the embodiment in FIGS. 13 to 16, with the addition of theexterior differential of the embodiment of FIGS. 36 and 37, and whichprovokes in the central shaft an alternating reciprocating movement ofone turn to the right and another to the left.

FIG. 53 shows the previous graph with a 90 resting point.

FIG. 54 shows a graph of the semiopen, double lift shed with 30 restpoint of the embodiment in FIGS. 17 to 21, with the addition of theexterior differential of the embodiment of FIGS. 36 and 37, and whichprovokes in the central shaft an alternating reciprocating movement ofone turn to the right and another to the left.

FIG. 55 shows the previous graph with a 60 resting point.

Similar reference numbers are used to denote similar correspondingpieces in the different variations of realization.

Upon referring to the FIGS., and particularly FIGS. I4 and FIGS. 30 and31, 1 represents the driving shaft of the device, the shaft beingtoothed horizontally; 2 represents the eccentric disc carrier; 3 theeccentric provided with an interiorly toothed crown, eccentric 3 beingfixedly connected to the carrier disc 2; 4 shows a cage of bearingneedles interposed between the external eccentric surface of eccentric 3and the interior of the connecting rod ring 5; 6 shows each one of thefour satellite pinions which engage with the interiorly toothed crown ofthe eccentric 3 and a toothed portion of the shaft 1, and which pinionsare supported on the inside face of the satellite disc carrier 7,centered to the driving shaft 1 by means of the bolts 8 (FIGS. 30 and31) situated from the exterior face of the disc 7, projecting from theinterior face and constituting the free turning shafts of the pinions 6;where 9 (FIG. 31) represents a peripheral slot in the disc 2 for therest position of the lower shed and 10 represents an opposite slot forthe rest position of the upper shed; whereby 11 represents theperipheral slots in the satellite carrier disc 7, engagement of one ofthem simultaneously with the disengagement of slots 9 and 10 of the disc2 causes the machine to enter the alternating rise and fall continuedposition; where 12 represents the upper cranked lever in front of thedisc 2, which lever 12 engages one of slots 9 or 10, and 13 representsthe twin lower lever in front of the disc 7 which engages in one of theslots 11 of said disc 7, both levers l2 and 13 being solidly fixed tothe common control shaft 14; where 15 represents the flange withprojecting appendice of the connecting rod 5 which provokes theoscillation of the lever or stave 16 that activates the healds to formthe distinct phases of the shed.

In the variation of FIGS. 5 to 8, the lever 12 is mounted on the fixedshaft 17 and the lever 13 15 mounted on a movable shaft 18 which issupported by the radial lever 19, which lever has a follower member 19Areceived within a slot of the eccentric 20, whereby lever 19 oscillatesdue to the eccentric 20 oscillating with the shaft 21.

In the variation of FIGS. 9 to 12, two slotted eccentrics 22 and 22 aremounted on shaft 21 for varying the position of the shafts 23 and 24,which shafts are supported in the respective extremities of the radiallevers 25 and 26, with whose shafts the cranked levers 12 and 13 gyrate.Levers 25 and 26 have followers engaged within the grooves of theeccentrics 22 and 22 for movement thereby. Further eccentrics 22 and 22are angularly movable in opposite directions as is evident frominspection of FIGS. 9 and 10.

In the embodiment of FIGS. 13 to 16, the variation consists of acompensated change of the number of teeth in two of the satellitepinions 27 and 28 mounted in opposition on the same diameter. Due topinions 27 and 28, the lever 16 is displaced by half a stroke only byone complete turn of the central shaft 1, thus obliging this shaft 1 tomake two complete turns per stroke.

The variation in FIGS. 17 to 21 consists of the provision of thecompensated change in the number of teeth in two of the opposingsatellite pinions 27 and 28 on the same diameter and in a determinednumber of teeth, so that in the opposing position of said pinions, thelever 16 shall not arrive at the medium shed, as much in the up as inthe down position; by this means the semiopen double lift shed isattained.

The variation in FIGS. 22 to 25 comprises the addition of a radial lever35 oscillated by the eccentric 34 driven by the shaft 36. The lever 35again has a follower 35A engaged with a slot formed on eccentric 34 forcausing angular displacement of lever 35. Shaft 14 is mounted on lever35, which shaft 14 rotatably supports levers 12 and 13. Also, pairs ofpinions 6' and 6" are disposed between toothed shaft 1 and toothedeccentric 3.

The variation in FIGS. 26 to 29, consists of the addition of aninterconnecting articulated tie rod 37 between the appendices 38 of theupper and lower cranked levers l2 and 13.

FIGS. 36 and 37 illustrate therein an actuating device useable with theembodiments of FIGS. 13 to 21 and 26 to 29 for causing relative rotationbetween the front and rear discs due to the planetary mechanismtherebetween, wherein 29 represents each one of the satellite pinions;30 represents the planetary toothed crown; 31 represents the front disc;32 represents the rear disc; 33 represents each of the shaft bolts ofthe satellites 29 fixed in the rear disc 32; 41 represents the disccarrying sleeve on which the discs gyrate and which sleeve 41 is fixedby screws to the driving shaft 1; 42 represents the lug of the disc 41;45 denotes the articulated connecting rod on the lug 43; 46 denotes therunner that activates both connecting rods displaced by the heart shapedeccentric 47 solidly fixed to the ingoing shaft of the machine 48 whichgives one turn of 180 with a stop position and l more with another stop,and whose eccentric may offer distinct shed stops according to the typeof loom and of the articles to be woven; where 49 represents each of thetwo rollers that provoke the displacement of the runner 46 upon gyrationof the eccentric 47; where 50 represents the articulation shaft of theconnecting rods 44 and 45 at the extremity of the runner 46.

The control devices as described in detail above are individually usedfor controlling the movement of a heald (not shown) which is operativelyinterconnected to the lever or stave 16, which heald is moved due torotational movement of the main shaft 1. The above-described controldevices permit the heald to be fixedly locked in a selected positionirrespective of the rotational movement of the shaft 1, or alternativelythe control devices permit the heald to be moved in response to therotational movement of the shaft 1.

Specifically, considering the operation of the embodiment of the controldevice illustrated in FIGS. 1-4, 30 and 31, when the control lever 12 isdisposed so as to engage the slot 9 formed within the disc 2 asillustrated in FIG. I, this causes the disc 2 and the eccentric 3carried thereon to be fixedly locked. However, since lever 13 cannotengage the slots 11 of the disc 7, the disc 7 is freely rotatable andaccordingly any rotational movement of the central shaft 1 will betransmitted to the pinion 6, which pinion 6 will react with the internalring gear teeth of the stationary eccentric 3 so as to cause the pinion6 and carrier 7 to be rotated with a planetary gear-type of movement.With the control mechanism positioned as described above, as illustratedin FIG. 1, the rotational movement of the main shaft 1 thus causes afree wheeling of the disc 7, the eccentric 3 being nonrotatably lockedin position so as to also maintain the stave 16 locked in one of itsextreme end positions, which in turn results in the heald beingmaintained in a stationary position.

1. Improvements in heald frame control devices having positivecountereffect movement and double lift with Open shed, comprising atoothed driving shaft, a plurality of planetary pinions disposedadjacent and in meshing interengagement with said toothed shaft, a discdisposed concentric with said shaft and having said planetary pinionsrotatably mounted thereon, an eccentric member disposed for rotationconcentric with said shaft and having a toothed surface disposed inmeshing interengagement with said planetary pinions, said eccentricmember having an actuating surface eccentrically disposed relative tothe rotational axis of said shaft, a flange movably supported upon saideccentric actuating surface and having a projecting portion, anoscillatory driving lever articulated to the projecting portion of saidflange, the driving lever being adapted to be connected to and causeoscillation of a heald frame, a control lever disposed adjacent therotary shaft and angularly movable for causing a portion of said controllever to engage the disc or the eccentric member for selectivelyretaining same in a selected position and means for causing the controllever to undergo a movement of displacement from its articulation pointfor graduating the opening of the shed, whereby rotation of saideccentric member causes relative reciprocating movement of said flangerelative to said eccentric member with said relative movement beingtransmitted through the driving lever to the heald frame. 2.Improvements in heald frame control devices according to claim 1, inwhich at least two planetary pinions are provided and disposed ondiametric opposite sides of the rotational axis of said driving shaft,said two planetary pinions being of different diameters.
 3. Improvementsin heald frame control devices according to claim 1, in which theplanetary pinions comprise a first set of planets disposed in meshingengagement with said two shafts and a second set of planets disposed inmeshing engagement with said first set and with the toothed surface ofsaid eccentric member, said first and second sets of planets beingrotatably supported upon said disc.
 4. Improvements in heald framecontrol devices according to claim 1, in which the eccentric member hasan interior toothed surface disposed in substantially concentricrelationship with the rotational axis of said toothed shaft, saideccentric member further having a substantially cylindrical smoothexterior surface thereon disposed eccentrically relative to therotational axis of said toothed shaft, said flange comprising acranklike member having one end thereof rotatably supported upon saidsmooth eccentric surface, the other end of said cranklike member beingarticulated to said driving lever.
 5. Improvements in heald framecontrol devices according to claim 4, in which the disc and theeccentric member each have slots on the outer peripheries thereof, andthere being provided a pair of pivotal control levers with the extremityof one of said control levers being adapted to extend into the slotformed in the eccentric member and the extremity of the other controllever being adapted to extend into the slot in the disc for permittingeither the eccentric member or the disc to be selectively maintained ina selected position.
 6. Improvements in heald frame control devicesaccording to claim 5, in which the control levers are mounted forpivotal movement toward and away from the disc and the eccentric memberabout selected pivot points, and means mounting said control levers forpermitting selected movement of said pivot points relative to therotational axis of said shaft.
 7. Improvements in heald frame controldevices according to claim 6, in which the mounting means includes anarm member extending radially relative to said shaft and angularlydisplacable substantially about the rotational axis of said shaft, saidcontrol lever being pivotally mounted on said arm at a point displacedradially outwardly from the rotational axis of said shaft. 8.Improvements in heald frame control devices according to claim 7,further including ecceNtric cam means coacting with said arm member forcausing swinging movement of said arm member about the rotational axisof said shaft.
 9. Improvements in heald frame control devices accordingto claim 1, in which a pair of control levers are provided adjacent thecontrol device with one of said control levers being disposed forcoaction with the eccentric member and the other of the control leversbeing disposed for coaction with the disc, one end of said controllevers being disposed for coaction with said eccentric member and saiddisc, and the other end of said control levers being united by a linkingrod provided with self-reciprocating movement, said control levers eachbeing pivotally mounted at a point disposed between the opposite endsthereof.
 10. Improvements in heald frame control devices according toclaim 1, in which first and second connecting rods are pivotallyinterconnected to the disc and the eccentric member, respectively, saidfirst and second connecting rods in turn being pivotally interconnectedto a slideable control member and a rotational rotatable cam memberdisposed in driving engagement with said slideable control member forcausing slideable movement thereof with the slideable movement of thecontrol member causing a corresponding oscillation of the disc and theeccentric member due to the connecting rods disposed therebetween, saidconnecting rods being interconnected to said disc and said connectingmember for causing oscillation thereof in opposite directions inresponse to reciprocation of said slideable control member.